Core:
2x 15 kneeling cable crunch with whole stack
2 x 30-40 second Side Plank for each side (Seriously, whoever invented these has simply lost his inherent love for humanity).
2x 15 x 155 on lumbar machine

2x 15 Hip Raises
2x 15 Swiss ball hamstring rolls (lying on back, heels on ball, roll it back to butt and straighten back out again)